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Characteristics for grade     L90   ( Л90 )



      Grade :     L90   ( Л90 )
      Classification :   Copper-zinc alloys pressure treated
      Equivalent grades:   Go here



Chemical composition in % for grade   L90   ( Л90 )
Fe P Cu PbZn Sb Bi Impurity
max   0.1max   0.0188 - 91max   0.038.8 - 12max   0.005max   0.002 all 0.2
Comment: Zn is a basis; the percentage of Zn is given approximately.


Mechanical properties under Т=20oС for grade   L90   ( Л90 )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Band, GOST 8036-79     250   38    
Strip, GOST 931-90     230-340  36    
Strip, GOST 931-90     350   3    


    Brinell hardness for     L90   ( Л90 )   ,     Sheet GOST 2208-2007 HB 10 -1 = 60   MPa
    Brinell hardness for     L90   ( Л90 )   ,     Sheet GOST 2208-2007 HB 10 -1 = 110   MPa


Friction coefficient of the material   L90   ( Л90 ) .
 Friction coefficient with oil : 0.074
 Friction coefficient without oil : 0.44


Technological properties of the material   L90   ( Л90 ) .
        Melting temperature : 1045   °C
        Forging temperature : 700 - 850   °C
        Annealing temperature : 450 - 600   °C


Physical properties for grade   L90   ( Л90 )
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m
20 1.05   180 8780   45
100   17.1     398  


Equivalent steels for grade     L90   ( Л90 )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceEnglandEuropeanItalyPolandCzechiaAustria
-DIN,WNrJIS AFNORBSEN UNIPNCSNONORM
C22000
2.0230
CuZn10
C2200
CuZn10
U-Z10
CZ101
CuZn10
P-CuZn10
P-OT90
CuZn10
423201
CuZn10



Types of delivery of grade   L90   ( Л90 )
B34 - Ribbons
B53 - Sheets and Strips
В54 - Ribbons


Specification :
Mechanical properties :
sв - Tensile strength , [MPa]
sT - Yield stress, [MPa]
d5 - Specific elongation at fracture , [ % ]
y - Reduction of area , [ % ]
KCU - Impact strength , [ kJ / m2]
HB - Brinell hardness , [MPa]

Physical properties :
T - Test temperature , [Grade]
E - Young modulus , [MPa]
a - Coefficient of linear expansion (range 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

  L90   ( Л90 ) - Copper-zinc alloys pressure treated: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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